Dave,
great read and if you need how to do the clutch, I posted it in the forum somewhere. Uses a pre-BMW mini door pin cut down and re-drill (dead easy compared to what you went through)
I thought about getting an Ignitech but the price
I have an FZ600 but have fitted the '91 engine, also check the primary gear near the clutch, mine was wobbly loose.
there is a vibration around 5 - 6k on these, but its called character